Normalized Difference Impervious Surface Index with MNDWI
(T - (((G - S1)/(G + S1)) + N + S1) / 3.0)/(T + (((G - S1)/(G + S1)) + N + S1) / 3.0)
T · G · S1 · N
urbaninfrastructureLandsat-TMLandsat-ETM+